Homeland Security Secretary Jeh Johnson, asked by President Obama to review U.S. deportation policy in the face of congressional inaction, says he is “looking for ways to more effectively enforce and administer our immigration laws.”

“Immigration laws or any other law needs to comport with American values. One of those American values is respect for human dignity. I also believe one of those American values is respect for the sanctity of the family unit,” Johnson said in an interview that aired Sunday on ABC’s “This Week.”

“None of what I can do, however, is a substitute for action by Congress. We have an immigration system in this country that is not working. Comprehensive immigration reform would fix it. This is something we need to do. I’m confident that it will happen.”

Johnson said he doesn’t understand those who say that the Obama administration is not enforcing immigration aw.